Cat (Australia); lots of cats became feral and they reproduce very fast. They became the apex predator and the native species have no defense system for them, so the cats brought tens of species on the verge of extinction (mainly placental mammals).
Fox (Australia); became an apex predator in the lack of competition, and damages the populations of native small placental mammals.
Hair (Australia); reproduces much quicker than the native species of mammals, increased significantly in numbers, and out competes the native species for the food sources.
African bee (the Americas); much more aggressive and stronger than the native bees and systematically kills their populations.
Grey squirrel (Britain); reproduces quicker than the red squirrel, is bigger, and out competes for food, brought it on the verge of extinction.
Refined carbohydrates tend to be much in lower in
fiber and vitamins than whole grains. These are complex carbs that have had fiber removed from them
leaving reproduce simple carbohydrates. These are rapidly absorbed causing a
blood sugar increase, which is followed by some crash. During the milling
process, the germ and bran is peeled and the grain's endosperm is crushed. The
final product becomes easier to gnaw and digest. The main reason manufacturers
process the grain is to lengthen shell life.